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