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