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