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