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