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