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