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