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