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