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