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