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