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