To be honest the Queen’s student community is not so diverse. Some may argue this is a generalization but in my opinion we’re a predominately white anglo-saxon post secondary school with few minorities. However having said that, I find Queen’s students to be pretty accepting of various groups/organizations. There’s virtually a club for everyone, it’s just up to you to seek them out!
But, if diversity is one of your top priorities in choosing a university I would recommend choosing a school in Toronto.
Hope that helped a bit… Cheers!