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