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