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