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