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