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