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