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