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