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