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