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