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)(23,29)(25,33)(27,35)(28,32)(30,36)(31,34)(1,2)(3,4)(5,7,9,15)(6,10,12,13)(8,14,17,20)(11,18,16,19)(21,22,26,24)(23,30,31,27)(25,28,33,32)(29,36,34,35)(2,4)(21,23,26,31)(22,27,24,30)(25,34,33,29)(28,36,32,35)(5,8,9,17)(6,11,12,16)(7,14,15,20)(10,18,13,19)(21,24,26,22)(23,30,31,27)(25,32,33,28)(29,36,34,35)(2,4)(7,15)(10,13)(14,20)(18,19)(22,24)(27,30)(28,32)(35,36) 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.