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