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