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