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