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