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