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)(17,18,22,27,21,26,29,24)(19,28,20,31,30,23,32,25)(1,2)(3,6)(4,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,19,21,30)(18,23,26,28)(20,29,32,22)(24,31,27,25)(1,2)(3,8)(4,6)(5,7)(11,16)(13,15)(18,24)(20,32)(22,29)(23,31)(25,28)(26,27) involution — undirected(1,3,5,4)(2,6,7,8)(10,14)(13,15)(17,20)(18,25)(19,29)(21,32)(22,30)(23,24)(26,31)(27,28)(1,4,5,3)(2,6,7,8)(19,30)(20,32)(23,28)(25,31)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.