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)(21,22,27,32)(23,29,34,35)(24,28,33,36)(25,30,26,31)(1,3,4,2)(5,7)(6,10)(8,15)(9,14)(11,17)(12,19)(13,18)(16,20)(21,23,26,33,27,34,25,24)(22,28,30,35,32,36,31,29)(6,11)(8,16)(10,17)(12,13)(15,20)(18,19)(21,24,25,34,27,33,26,23)(22,29,31,36,32,35,30,28)(7,14)(10,18)(15,20)(17,19)(21,25,27,26)(22,30,32,31)(23,24,34,33)(28,35,36,29)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.