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