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