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