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