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