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