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