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