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