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