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)(12,13)(14,15)(17,18,23,26)(19,21,24,29)(20,22,25,31)(27,28,30,32)(33,34)(35,40)(36,42)(37,41)(38,39)(43,47)(44,48)(45,46)(1,3)(2,8)(4,14)(5,15)(6,9)(7,11)(10,12)(13,16)(17,19,23,24)(18,21,26,29)(20,27,25,30)(22,28,31,32)(34,39)(40,42)(41,46)(47,48)(2,9)(3,11)(5,16)(12,14)(19,24)(21,29)(27,30)(28,32)(33,35,38,36)(34,40,39,42)(37,43,45,44)(41,47,46,48)(1,4,7,10)(2,5,9,16)(3,12,11,14)(6,15,8,13)(17,20)(18,22)(19,27)(21,28)(23,25)(24,30)(26,31)(29,32)(33,36,38,35)(34,40,39,42)(37,43,45,44)(41,48,46,47)(1,5)(2,10)(3,13)(4,9)(6,12)(7,16)(8,14)(11,15)(17,21,23,29)(18,24,26,19)(20,28,25,32)(22,30,31,27)(33,34)(35,42)(36,40)(37,41)(38,39)(43,48)(44,47)(45,46)(1,6)(2,11)(3,9)(4,13)(5,12)(7,8)(10,15)(14,16)(17,22)(18,25)(19,28)(20,26)(21,30)(23,31)(24,32)(27,29)(33,37,38,45)(34,41,39,46)(35,43,36,44)(40,47,42,48)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.