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