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