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