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