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