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