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