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