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