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