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