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