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