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