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