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