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