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