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