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)(11,14)(12,13)(15,16)(17,18,21,24)(19,20,25,23)(22,26,31,32)(27,30,28,29)(2,6)(7,8)(17,19,21,25)(18,23,24,20)(22,27,31,28)(26,29,32,30)(1,3,5,4)(2,7,6,8)(10,13)(14,16)(18,24)(19,27)(20,29)(22,31)(23,30)(25,28)(1,3,5,4)(2,7,6,8)(9,11,12,15)(10,14,13,16)(17,20,21,23)(18,25,24,19)(22,30,31,29)(26,28,32,27)(1,4,5,3)(2,8,6,7)(19,27)(20,30)(22,31)(23,29)(25,28)(26,32)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.