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