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