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