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