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