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