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