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)(11,14)(12,13)(15,16)(18,22)(20,28)(23,30)(24,29)(25,31)(27,32) involution — undirected(9,10)(11,15)(12,13)(14,16)(17,18)(19,25)(20,29)(21,24)(22,28)(23,26)(27,30)(31,32) involution — undirected(2,6)(7,8)(10,13)(14,15)(17,19,21,26)(18,23,24,25)(20,27,28,32)(22,30,29,31)(1,3,5,4)(2,7,6,8)(9,11,12,16)(10,14,13,15)(18,24)(19,26)(22,29)(27,32)(1,4,5,3)(2,8,6,7)(19,26)(23,25)(27,32)(30,31)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.