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