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