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