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