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