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