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