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