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