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