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