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