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