Firstly congratulations for being about to graduate college! Personally, I know it isn’t great but I tend to avoid words I stutter with where possible, it isn’t a solution but more of an avoidance technique but whatever makes a stressful situation easier. On that note, maybe you could pre-plan your presentation and consider possible questions and answers so you are able to use a wider range of vocabulary and hopefully stutter less? Also just feel as confident in yourself and what you are saying as possible and relax. Good luck, let us know how you get on!