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