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