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