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