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