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