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