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