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