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