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)(11,13)(12,14)(15,16)(17,18,23,27)(19,28,25,21)(20,24,26,22)(29,32,31,30)(1,3,5,4)(2,6,7,8)(9,11)(10,13)(12,15)(14,16)(17,19,23,25)(18,21,27,28)(20,31,26,29)(22,30,24,32)(1,4,5,3)(2,6,7,8)(10,14)(11,15)(17,20,23,26)(18,22,27,24)(19,29,25,31)(21,32,28,30)(10,14)(13,16)(17,21,22,29,23,28,24,31)(18,25,20,30,27,19,26,32)(2,7)(6,8)(17,22,23,24)(18,26,27,20)(19,30,25,32)(21,29,28,31)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.