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