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