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