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