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