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