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