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