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