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