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