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