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