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