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