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