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