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)(17,18,22,24)(19,23,28,27)(20,25,31,30)(21,26,32,29)(1,3,4,7)(2,5,6,8)(10,11)(14,15)(17,19)(18,23)(20,29)(21,25)(22,28)(24,27)(26,31)(30,32)(1,2)(3,5)(4,6)(7,8)(9,11,13,10)(12,15,16,14)(18,24)(19,28)(25,30)(26,29)(9,12,13,16)(10,14,11,15)(17,20)(18,25)(19,29)(21,23)(22,31)(24,30)(26,28)(27,32)(1,3)(2,5)(4,7)(6,8)(17,21,22,32)(18,26,24,29)(19,30,28,25)(20,27,31,23)(1,2)(3,5)(4,6)(7,8)(17,19)(18,27)(20,29)(21,30)(22,28)(23,24)(25,32)(26,31) 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.