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