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