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