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