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