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