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