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