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