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