automatic display on page with categorie

Hi

Thanks for this really nice theme !
I tried to find if the question has already appeared, but I didn’t find anything. Maybe my english too bad ^^

Website : ksper.fr
I wanna know how can I display automatically on one page (by exemple ” sports “) only pages with a specifical categorie. This website is the perfect exemple : http://cotazeroblog.com for the result I would like to obtain.

Thanks for the answer 🙂