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