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