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