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