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