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