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