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