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