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