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