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