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