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