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