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