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