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