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