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