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