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