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