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