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