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