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