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