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