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