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