One vertex per element, one color per generator, with an edge from x to x·s.
(2,3)(5,6,10,13)(7,14,16,19)(8,12,9,18)(11,17,20,15)(21,22,27,32)(23,28,34,29)(24,35,33,36)(25,31,26,30)(1,2,4,3)(21,23,27,34)(22,28,32,29)(24,25,33,26)(30,35,31,36)(5,7,8,17,10,16,9,15)(6,11,18,19,13,20,12,14)(21,24,26,23,27,33,25,34)(22,29,31,36,32,28,30,35)(1,3,4,2)(5,8,10,9)(6,12,13,18)(7,15,16,17)(11,19,20,14)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.