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)(11,13)(12,14)(15,16)(17,18,23,22)(19,24,26,21)(20,25,30,29)(27,31,32,28)(1,3,5,4)(2,6,8,7)(9,11)(10,13)(12,15)(14,16)(17,19,23,26)(18,24,22,21)(20,27,30,32)(25,31,29,28)(1,3,5,4)(2,7,8,6)(10,14)(11,15)(17,20)(18,25)(19,27)(21,28)(22,29)(23,30)(24,31)(26,32)(10,14)(13,16)(17,21,22,19,23,24,18,26)(20,28,29,27,30,31,25,32)(1,4,5,3)(2,7,8,6)(17,18,23,22)(19,24,26,21)(20,29,30,25)(27,28,32,31)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.