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)(19,24)(20,26)(21,27)(22,30)(23,25)(28,32)(29,31)(1,2)(3,4)(5,7)(6,8)(10,13)(11,16)(17,19,23,20)(18,24,25,26)(21,30,31,28)(22,29,32,27)(1,3)(2,6)(4,7)(5,8)(9,11)(10,14)(12,13)(15,16)(18,25)(19,20)(21,31)(22,32) involution — undirected(3,8)(4,6)(9,12,15,14)(10,11,13,16)(17,20,23,19)(18,26,25,24)(21,28,31,30)(22,27,32,29)(1,4)(2,3)(5,6)(7,8)(9,13,15,10)(11,12,16,14)(17,21,23,31)(18,27,25,29)(19,28,20,30)(22,24,32,26)(1,2)(3,4)(5,7)(6,8)(9,14,15,12)(10,16,13,11)(17,22)(18,28)(19,29)(20,27)(21,24)(23,32)(25,30)(26,31)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.