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