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