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