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