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