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