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)(13,14,16,18)(15,19,20,17)(21,22)(23,30)(24,32)(25,28)(26,29)(27,35)(31,34)(33,36)(5,7)(6,8)(9,12)(10,11)(13,15)(14,17)(16,20)(18,19)(21,23,26,28)(22,25,29,30)(24,33,35,31)(27,36,32,34)(6,10)(8,11)(13,15,16,20)(14,17,18,19)(21,22)(23,25)(24,27)(26,29)(28,30)(31,34)(32,35)(33,36)(1,2)(3,4)(5,7)(6,8)(9,12)(10,11)(13,14)(15,17)(16,18)(19,20)(21,24,26,35)(22,27,29,32)(23,31,28,33)(25,34,30,36)(5,8)(6,7)(9,11)(10,12)(13,15)(14,17)(16,20)(18,19)(21,25)(22,28)(23,29)(24,34)(26,30)(27,33)(31,32)(35,36) 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.