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