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