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