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