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