This is, of course is culturally directed. In the U.S., show that you are engaged in a conversation by looking at the person who is talking to you.
People tend to remember someone who holds their attention and listens to their words.
Networking is about relationships, reputations, images, and people. Make a great first impression and maintain a professional reputation by looking polished and competent. Diversity is more than the color of someone's skin. Remember, a person is more than a face, a name, and a social security number.