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