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