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