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