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