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