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