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