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