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