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