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