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