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