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