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