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