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