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