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