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