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