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)(19,22)(20,23)(21,24)(25,26)(27,32)(28,31)(29,30)(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)(17,19)(18,22)(20,26)(21,29)(23,25)(24,30)(27,31)(28,32)(33,35,40,39)(34,41,37,43)(36,44,38,46)(42,47,45,48)(2,9)(3,4)(10,16)(11,12)(18,20)(19,25)(24,28)(27,29)(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)(17,20,23,18)(19,26,25,22)(21,28,31,24)(27,30,29,32)(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)(17,21,23,31)(18,24,20,28)(19,27,25,29)(22,32,26,30)(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)(17,22,23,26)(18,25,20,19)(21,30,31,32)(24,27,28,29)(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.