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