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