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