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