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