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