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