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)(19,20)(21,29)(22,26)(23,24)(25,32)(27,30)(28,31)(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,14)(13,16)(17,19,22,23)(18,24,26,20)(21,27,32,31)(25,30,29,28)(3,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,20,19,18,22,24,23,26)(21,30,27,29,32,28,31,25)(2,6)(5,7)(11,16)(13,15)(17,21)(18,25)(19,27)(20,28)(22,32)(23,31)(24,30)(26,29) involution — undirected(10,14)(13,15)(17,19,22,23)(18,20,26,24)(21,31,32,27)(25,30,29,28)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.