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