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