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