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