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