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