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