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