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