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