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