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