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