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