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