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