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