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