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