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