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