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