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