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