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