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