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