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