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