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