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