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