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