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