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