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