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