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