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