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