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)(17,18)(19,23)(20,25)(21,27)(22,24)(26,28)(29,30)(31,32)(9,11,12,16)(10,13,14,15)(17,19)(18,23)(20,29)(21,31)(22,28)(24,26)(25,30)(27,32)(2,3)(6,7)(18,24)(19,28)(20,27)(30,31) involution — undirected(1,3,5,2)(4,7,8,6)(17,20,22,27)(18,25,24,21)(19,29,28,32)(23,30,26,31)(1,4,5,8)(2,6,3,7)(17,19)(18,26)(20,29)(21,30)(22,28)(23,24)(25,31)(27,32)(17,21,22,25)(18,27,24,20)(19,30,28,31)(23,29,26,32)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.