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