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