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)(19,23,28,29)(20,30,27,24)(21,25,32,31)(1,3,5,4)(2,6,8,7)(9,11)(10,13)(12,15)(14,16)(17,19)(18,23)(20,31)(21,30)(22,28)(24,32)(25,27)(26,29)(1,3,5,4)(2,7,8,6)(10,14)(11,15)(17,20)(18,24)(19,25)(21,23)(22,27)(26,30)(28,31)(29,32)(1,4,5,3)(2,6,8,7)(10,14)(13,16)(17,21,26,31,22,32,18,25)(19,27,23,24,28,20,29,30)(2,8)(6,7)(20,27)(21,32)(24,30)(25,31) 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.