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