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