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