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