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