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