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