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