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