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