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