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