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