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