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