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