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Presuming it is a real song and not something composed by Joel McNeely, the name of the song has alluded all American Dad message boards and trivia websites. The only line heard is "I'm a diva" and that is too generic for an accurate websearch when it comes to dance music.
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Also, it's highly probable it's not a real song, or at least not a 'named' song but just generic dance music they found, since music rights cost many thousands of dollars, it's unlikely the song wouldn't be instantly recognizable. When FOX pays that much money for song rights, they make sure you know what song it is.