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