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