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)(11,15)(12,14)(13,16)(18,20)(22,24)(25,26,28,30)(27,31,32,29)(1,3,6,4)(2,7,5,8)(9,11,14,13)(10,15,12,16)(19,23)(22,24)(27,32)(29,31)(2,5)(7,8)(9,10,14,12)(11,16,13,15)(17,18,21,20)(19,22,23,24)(25,26)(27,29)(28,30)(31,32)(1,4,6,3)(2,7,5,8)(9,12,14,10)(11,15,13,16)(17,19,21,23)(18,22,20,24)(25,27)(26,29)(28,32)(30,31)(1,5,6,2)(3,8,4,7)(9,13,14,11)(10,15,12,16)(17,20,21,18)(19,24,23,22)(25,26)(27,29)(28,30)(31,32)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.