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