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