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