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