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