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