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