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