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