One vertex per element, one color per generator, with an edge from x to x·s.
(2,3)(5,6)(7,10)(8,9)(11,12)(13,14,16,18)(15,17,19,20)(21,22,25,27,26,29,24,30)(23,31,33,36,34,35,32,28)(1,2,4,3)(6,9)(10,12)(13,15)(14,17)(16,19)(18,20)(22,27)(24,25)(28,35)(29,30)(31,36)(32,33)(15,19)(17,20)(21,23,26,34)(22,28,29,36)(24,33,25,32)(27,35,30,31)(1,3,4,2)(5,7,8,11)(6,10,9,12)(22,29)(27,30)(28,36)(31,35)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.