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