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