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