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