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