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)(17,18,23,26)(19,27,28,32)(20,21,25,22)(24,29,31,30)(10,13)(11,15)(17,19,23,28)(18,24,26,31)(20,27,25,32)(21,30,22,29)(2,5)(6,8)(9,10)(11,14)(12,13)(15,16)(19,28)(24,31)(27,32)(29,30) involution — undirected(1,3,4,7)(2,6,5,8)(10,13)(14,16)(17,20)(18,21)(19,24)(22,26)(23,25)(27,29)(28,31)(30,32)(9,11,12,15)(10,14,13,16)(17,21,23,22)(18,25,26,20)(19,29,28,30)(24,27,31,32)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.