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