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