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