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