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