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