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