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