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