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