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