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