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