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