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