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