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