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