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