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