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