Interestingly enough, the best conversations I've had in real life (strangers, mind you) were with older women (say, 55-65). I'm very much younger, and also female. This has happened with multiple different people, enough to notice a trend. I often don't really connect with people my age, or anyone for that matter, but the people I respected or felt some sort of common ground with, ironically, were far removed from my "generation" or demographic.
Speak to them like you would anyone. You might find common trends in line with the demographic, but there's still a great diversity in values, hobbies, personalities, and demeanor, because they're still individuals. It's not like people become aliens, completely out of touch, once they're a certain age—unless, of course, they're a politician.