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