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