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)(13,16)(17,18)(19,22,26,30)(20,27,28,23)(21,24)(25,29)(31,32)(1,2,4,6,5,8,12,14)(3,7,10,13,11,15,9,16)(17,19)(18,22,24,30)(20,25)(21,26)(23,29,27,32)(28,31)(1,3)(2,7)(4,10)(5,11)(6,13)(8,15)(9,12)(14,16)(17,20)(18,23)(19,25)(21,28)(22,29)(24,27)(26,31)(30,32) involution — undirected(2,8)(6,14)(7,15)(13,16)(18,24)(19,26)(23,27)(25,31) 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.