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