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)(17,18)(19,29)(20,30)(21,25)(22,27)(23,26)(24,28)(31,32) involution — undirected(1,2)(3,12)(4,7)(5,10)(6,11)(8,14)(9,13)(15,16)(17,19)(18,20)(21,28)(22,25)(23,30)(24,31)(26,32)(27,29) involution — undirected(1,3)(2,8)(4,15)(5,13)(6,14)(7,9)(10,16)(11,12)(17,20,24,21)(18,19,28,31)(22,29,23,32)(25,26,30,27)(1,3)(2,9)(4,13)(5,15)(6,14)(7,8)(10,12)(11,16)(17,21,24,20)(18,25,28,30)(19,26,31,27)(22,29,23,32)(1,4,6,5)(2,10,11,7)(3,13,14,15)(8,9,12,16)(17,22,24,23)(18,26,28,27)(19,25,31,30)(20,32,21,29)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.