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