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