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