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