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