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