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