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