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