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