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