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