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