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