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