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