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