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