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