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