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