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