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