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)(17,18,22,21)(19,23,26,30)(20,24,29,28)(25,31,32,27)(1,3,5,4)(2,6,7,8)(9,10)(11,14)(12,13)(15,16)(17,19,22,26)(18,23,21,30)(20,27,29,31)(24,25,28,32)(1,4,5,3)(2,6,7,8)(10,13)(14,16)(17,18,22,21)(19,23,26,30)(20,24,29,28)(25,31,32,27)(10,13)(14,16)(17,20,22,29)(18,24,21,28)(19,25,26,32)(23,31,30,27)(2,7)(6,8)(9,11,12,15)(10,14,13,16)(17,18,22,21)(19,23,26,30)(20,28,29,24)(25,27,32,31)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.