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