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