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