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