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