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