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