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