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