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