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