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