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