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)(11,13)(12,14)(15,16)(17,18,23,25)(19,20,28,30)(21,24,31,29)(22,32,27,26)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,19,23,28)(18,20,25,30)(21,27,31,22)(24,26,29,32)(9,11)(10,13)(12,16)(14,15)(17,20,22,29,23,30,27,24)(18,21,26,28,25,31,32,19)(3,8)(6,7)(11,16)(13,15)(17,21)(18,24)(19,27)(20,26)(22,28)(23,31)(25,29)(30,32) involution — undirected(1,4,5,2)(3,7,8,6)(10,14)(13,15)(18,25)(19,28)(21,31)(26,32)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.