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