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