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