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