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