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