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