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)(17,18,22,21)(19,25,27,23)(20,24,29,30)(26,32,28,31)(33,34,38,39)(35,37,42,41)(36,40,47,44)(43,48,45,46)(4,11)(7,9)(12,16)(14,15)(17,19,22,27)(18,23,21,25)(20,26,29,28)(24,31,30,32)(33,34,38,39)(35,41,42,37)(36,44,47,40)(43,48,45,46)(2,3)(7,9)(8,10)(14,15)(34,39)(35,42)(40,44)(43,45) involution — undirected(1,3,6,2)(4,9,11,7)(5,10,13,8)(12,15,16,14)(17,19)(18,23)(20,28)(21,25)(22,27)(24,32)(26,29)(30,31)(33,35)(34,37)(36,45)(38,42)(39,41)(40,46)(43,47)(44,48)(1,4,6,11)(2,7,3,9)(5,12,13,16)(8,14,10,15)(17,20)(18,24)(19,26)(21,30)(22,29)(23,31)(25,32)(27,28)(33,36,38,47)(34,40,39,44)(35,43,42,45)(37,48,41,46)(1,5)(2,8)(3,10)(4,12)(6,13)(7,14)(9,15)(11,16)(17,21,22,18)(19,25,27,23)(20,24,29,30)(26,31,28,32)(33,37)(34,35)(36,46)(38,41)(39,42)(40,45)(43,44)(47,48)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.