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