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