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