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