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