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