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