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