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