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