The midfielder, 31, has had a hectic footballing schedule over the last 18 months, participating in two major international tournaments.
"He definitely needs that break because he played in the World Cup and also in the Asian Cup and I don't think that has helped him. In fact it has really hindered him in my eyes," Moyes said at his pre-match press conference.
Cahill, Everton and Australia have always had a good relationship and Moyes hopes that common sense will continue to prevail.
"I think it is important that he does look at the Club and because of that he will probably not get involved in any of the friendlies for Australia this summer."