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