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