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