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