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