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