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