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)(11,16)(12,14)(13,15)(17,18,24,28)(19,25,21,26)(20,31,32,30)(22,27,23,29)(2,6)(7,8)(9,11,13,12)(10,14,15,16)(17,19)(18,25)(20,29)(21,24)(22,31)(23,30)(26,28)(27,32)(1,3,5,4)(2,7,6,8)(10,15)(11,12)(17,20,23,25,24,32,22,26)(18,21,27,31,28,19,29,30)(1,4,5,3)(2,8,6,7)(9,12,13,11)(10,14,15,16)(17,21,24,19)(18,26,28,25)(20,29,32,27)(22,30,23,31)(11,12)(14,16)(17,22,24,23)(18,27,28,29)(19,30,21,31)(20,26,32,25)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.