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