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