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