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