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