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