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