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