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