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