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