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