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)(19,24)(20,22)(21,30)(23,25)(26,32)(27,31)(28,29)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,19)(18,24)(20,29)(21,27)(22,28)(23,26)(25,32)(30,31)(1,3,4,7)(2,6,5,8)(10,14)(11,16)(17,20,22,18)(19,24,28,29)(21,25,23,30)(26,32,27,31)(10,14)(13,15)(18,20)(19,26)(21,23)(24,31)(27,28)(29,32) involution — undirected(2,5)(6,8)(10,14)(13,15)(17,21,22,23)(18,25,20,30)(19,27,28,26)(24,32,29,31)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.