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