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