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