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