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