You guys and Your guys are somewhat informal in English language.
Typical example usages:
Do you guys want to come around to watch movies tomorrow night?
Is addressing a party of more than one, extending an invitation the them.
Do you guys sell pencils?
Said to a shop assistant, is asking whether the collection of people (the store), sell pencils.
In both of these examples, you guys refers to a collective entity.
'Your guys' might refer to the ownership of 'guys' by a single person.
Can you send your guys around to my house to clean my windows?
In this example, the guys belong to, in the sense of 'are employed by', the person being asked.
Can you drop your guys' tools around at mine to be cleaned?
Here, the guys belong to the employer, and the tools belong to each of the guys.
The question is, what about when I'm referring to ownership by a collective entity?
I love your guy's beer.
Is this correct?
Or should it be:
I love you guy's beer.