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