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