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