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