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