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