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