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