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