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