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