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