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