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