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