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