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)(11,14)(12,13)(15,16)(17,18,22,26,23,19,27,30)(20,28,21,25,31,24,32,29)(2,6)(7,8)(17,19)(18,23)(20,25)(21,28)(22,26)(24,32)(27,30)(29,31) involution — undirected(1,3,5,4)(2,7,6,8)(10,13)(14,16)(17,20,22,21,23,31,27,32)(18,24,26,29,19,28,30,25)(1,4,5,3)(2,8,6,7)(17,21,27,20,23,32,22,31)(18,25,30,28,19,29,26,24)(9,11,12,15)(10,14,13,16)(20,31)(21,32)(24,28)(25,29)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.