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