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