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