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