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