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