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