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