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