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