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