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