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