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