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