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