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)(17,18,21,25)(19,27,28,32)(20,26,22,24)(23,29,31,30)(9,11,13,15)(10,14,12,16)(17,19,21,28)(18,23,25,31)(20,29,22,30)(24,32,26,27)(1,3,5,4)(2,6,7,8)(9,12,13,10)(11,14,15,16)(19,28)(23,31)(27,32)(29,30)(1,4,5,3)(2,6,7,8)(18,24)(19,29)(20,22)(23,31)(25,26)(28,30)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.