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