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