The two will face off again when Wales play Uruguay in the China Cup final on Monday.
"That (comments in his book) was nothing really was it. It obviously got blown up a lot bigger than it was. He's always a tough opponent," Williams told a news conference.
"I said at the time, he's the hardest striker to play against in the Premier League. I'm expecting a difficult game, as always.
"We feel confident about the game and we concentrate on ourselves... At the same time, with regards to Suarez, I think that he's one of the best strikers in the world, and he's definitely one of the best I've played against."
While Wales failed to qualify for this year's World Cup finals, Uruguay have been pooled with hosts Russia, Egypt and Saudi Arabia in Group A.
(Reporting by Aditi Prakash in Bengaluru, editing by Pritha Sarkar)
