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