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