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)(11,12,16,14)(17,18,20,22)(19,21,23,24)(25,26,29,31)(27,30,32,28)(1,3,5,4)(2,6,7,8)(9,11,13,16)(10,14,15,12)(25,27)(26,28)(29,32)(30,31)(3,4)(6,8)(10,15)(12,14)(17,18)(19,21)(20,22)(23,24)(25,27,29,32)(26,28,31,30)(1,4,5,3)(2,6,7,8)(9,12)(10,11)(13,14)(15,16)(17,18)(19,21)(20,22)(23,24)(25,27)(26,30)(28,31)(29,32)(1,2)(3,8)(4,6)(5,7)(9,11)(10,12)(13,16)(14,15)(17,19,20,23)(18,21,22,24)(25,28,29,30)(26,27,31,32)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.