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