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