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