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