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