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