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