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