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