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