Hello,
They will not see you opening the cheat whatsoever.
What they can do though, is follow your exact movement, meaning they could see you looking through walls when using ESP and start being suspicious.
I'd recommend being as legit as possible, which minimizes the chances of getting caught.
As Nooby already stated, the cheat itself is fully undetected. The only way you could get banned at this point is by being too suspicious.
Dividerz's post in can admins see your cheat when they spy on you with admin tools? was marked as the answer