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