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