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