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