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