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