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