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