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