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