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