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