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