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)(14,15)(20,27)(24,29)(25,31)(30,32)(34,36)(35,41)(40,44)(43,45)(9,10)(11,15)(12,13)(14,16)(18,22)(23,28)(24,29)(30,32)(33,34,38,36)(35,42,41,39)(37,40,46,44)(43,48,45,47)(9,11,12,16)(10,14,13,15)(17,18,21,22)(19,23,26,28)(20,24,27,29)(25,30,31,32)(33,35,38,41)(34,39,36,42)(37,45,46,43)(40,48,44,47)(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)(35,39,41,42)(37,44,46,40)(43,47,45,48)(1,3,4,7)(2,5,6,8)(9,11)(10,14)(12,16)(13,15)(17,20,21,27)(18,24,22,29)(19,25,26,31)(23,30,28,32)(33,37,38,46)(34,40,36,44)(35,43,41,45)(39,47,42,48)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.