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