Honestly it's a bit hard to say, as I transitioned so long ago now, basically right out of school, so all my interactions as female are from high school and over 10 years ago.
Certainly comparing it to back then, guys are much more straightforward with me I suppose you could say. None of the bit of flirting or whatever, and they're more likely to just shoot the shit.
Most interesting for me in my first few years of transitioning was I suppose what guys spoke with me about, especially more of the 'jock' type guys (in high school I'd been in more of the punk and arty crowd). I had a trainer who would joke a lot about banging x and y chicks and oh was I getting any, high five, etc, and I remember one guy I played soccer with asking me how much I got laid on a holiday I had and when I replied something along the lines of uhhhhh not much? his response was something like 'yeah just a lot of fat students there, don't blame you'. It was a bit weird seeing that stark shift in how some guys talked about women to other guys.
For the most part though I suppose, it's nothing shockingly drastic in terms of differences, probably what you'd expect. A lot more hand shaking and obviously not trying to fuck me. I do sometimes wonder if I get more respect or weight given to me, particularly from men, just due to being a man. I work in a field that has a higher percentage of females than males in it, so I tend to stick out more from that and I suppose I can be more 'memorable' due to being an outlier, but there are times with male clients where I wonder if they'd have the same opinion of me if i were a woman.
It's also interesting as a straight male dealing with the being accused/thought of as being gay, and that being considered a bad thing. I'd never experienced that before, and being a slightly smaller guy that's not super macho I do occasionally get mistaken as gay. When I first started transitioning as well and looked some borderline between super young or a bit feminine, I was mistaken as gay a fair few times.
It was a very weird experience because I had grown up not caring about whether people were gay or not, having close friends who are gay, and would be perfectly content with being gay myself. But being a straight male, I felt for the first time that use of 'gay' as an insult and as a direct challenge to my masculinity, which was very weird and disconcerting. I'm much less bothered by it now, but especially when I was first transitioning and was pretty insecure about my masculinity and my appearance in general (whether I was 'passing' or not) it was an unpleasant experience.