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