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