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