When I bought my first hybrid about 15 years ago, I asked the bike shop guy what I should pay attention to, comfort-wise, that might be fine in these test drives around the parking lot but would cause aches and pains for longer rides. I was thinking about my back.
He gave me a clinical lecture about making sure that I was sitting on my bones and not putting pressure on the soft vaginal tissues. (The young sales guy who had been approaching walked away quickly )
My seat height can be adjusted but I can also slide it forward and back onits rails. This makes a big difference in exactly where the weight and pressure are going. That bike shop also swapped out the stem of that bike for one from a Bianchi because it had a different angle that put my arms just a little further forward, which I liked. (Alas, I sent some friends to them and they got a guy who tried to tell them exactly what they wanted -- nobody should want a hybrid! -- and wouldn't listen to a word they said. I suspect they got that young guy who couldn't handle talking about girlie parts.)
It could be the angles of that bike -- but a different seat & adjustment could also really help.