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