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