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