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