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