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