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