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