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