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