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