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