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