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