One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,12)(5,7)(6,11)(8,13)(10,14)(15,16)(33,34,38,37)(35,39,43,42)(36,44,45,40)(41,47,48,46)(1,3)(2,6)(4,10)(5,11)(7,9)(8,14)(12,15)(13,16)(17,18)(19,25)(20,24)(21,22)(23,27)(26,31)(28,29)(30,32)(33,34,38,37)(35,39,43,42)(36,40,45,44)(41,46,48,47)(2,7)(6,9)(8,12)(14,15)(18,22)(23,25)(24,29)(30,31)(34,37)(39,42)(40,44)(46,47) involution — undirected(1,4,5,13)(2,8,7,12)(3,10,11,16)(6,14,9,15)(17,19,21,27)(18,23,22,25)(20,26,28,32)(24,30,29,31)(33,35,38,43)(34,39,37,42)(36,41,45,48)(40,46,44,47)(1,3)(2,6)(4,10)(5,11)(7,9)(8,14)(12,15)(13,16)(17,20,21,28)(18,24,22,29)(19,26,27,32)(23,30,25,31)(33,36,38,45)(34,40,37,44)(35,41,43,48)(39,46,42,47)(1,2)(3,6)(4,8)(5,7)(9,11)(10,14)(12,13)(15,16)(17,18)(19,23)(20,24)(21,22)(25,27)(26,30)(28,29)(31,32)(33,37,38,34)(35,42,43,39)(36,44,45,40)(41,47,48,46)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.