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