Everybody is different and unique in their own way. When someone thinks of diversity they think of skin color, race or ethnicity, but diversity can mean other things too. Diversity can also be how unique you are from other people.
These are all known facts and the admission panel would not be interested in knowing them. Let's have a look at the prompt:
Rutgers University is a vibrant community of people with a wide variety of backgrounds and experiences. How would you benefit from and contribute to such an environment? Consider variables such as your talents, travels, leadership activities, volunteer services, and cultural experiences.
So what does this prompt asks you? There are two specific things you need to discuss: How will you benefit from Rutgers' vibrant community? How will you contribute to it? Concentrate on them and get your response to tackle those two questions.