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