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