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