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