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