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