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