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