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