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