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