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