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