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)(11,12)(13,16)(14,15)(17,18,21,24)(19,22,26,30)(20,27,28,23)(25,31,32,29)(1,2,5,6)(3,7,8,4)(9,10,13,16)(11,14,15,12)(17,19,21,26)(18,22,24,30)(20,25,28,32)(23,29,27,31)(1,3)(2,4)(5,8)(6,7)(9,10,13,16)(11,12,15,14)(17,18)(19,22)(20,23)(21,24)(25,29)(26,30)(27,28)(31,32)(1,4)(2,3)(5,7)(6,8)(9,11,13,15)(10,14,16,12)(1,2)(3,4)(5,6)(7,8)(9,10)(11,14)(12,15)(13,16)(17,19)(18,22)(20,25)(21,26)(23,29)(24,30)(27,31)(28,32) involution — undirected(1,4)(2,3)(5,7)(6,8)(9,12,13,14)(10,15,16,11)(17,20,21,28)(18,23,24,27)(19,25,26,32)(22,29,30,31)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.