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