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