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