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