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