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