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