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