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