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